[ 4367.803643][T20737] gre: GRE over IPv4 demultiplexor driver
[ 4369.886131][T20761] ip_gre: GRE over IPv4 tunneling driver
[ 4432.054800][T21334] ip6_gre: GRE over IPv6 tunneling driver
[ 4475.002479][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4480.890393][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4485.946399][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4491.898441][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4593.588990][T22824] ping (22824) used greatest stack depth: 22352 bytes left